Writing desk



FIG. 1 is a front perspective view of a writing desk, showing my new design;

FIG. 2 is a rear perspective view thereof;

FIG. 3 is a front view thereof;

FIG. 4 is a side view thereof taken from the right of FIG. 3;

FIG. 5 is an opposite side view thereof taken from the left of FIG. 3;

FIG. 6 is a rear view thereof; and,

FIG. 7 is a top view thereof.

The broken lines are for the purpose of illustrating the environment of the design only and form no part of the claimed design. 

I claim, the ornamental design for a writing desk, as shown and described. 